Billie's terminal illness was likely to have been caused by the frightening Summer Bay bush fire that was started by an unwell John Palmer – but upcoming scenes will see Nate come under fire for the decisions he made while treating Billie.

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When Tori is called into a special board meeting at the hospital, she is horrified when she realises that Nate is being grilled over her boyfriend Riley's surgeon report – which casts doubt over the way he handled Billie's devastating diagnosis.

Viewers know that Nate took charge of Billie's case and did all he could to save her, but his future as a doctor will be left in jeopardy thanks to Riley's damning report.

Aware that Nate's career could be seriously impacted by the investigation into Billie's treatment, Tori takes it upon herself to review the file herself.

Of course, it doesn't take a genius to work out that Riley has a problem with Nate – given the medic's romantic history with Tori – and it soon becomes clear that this entire investigation is based on Riley's personal vendetta.

Thankfully, Tori finds a serious discrepancy in the report which is enough to clear Nate, but she is unable to let the situation go and confronts Riley – demanding to know if he deliberately overstated Billie's ill health in the report in order to damage Nate's career.

Realising her suspicions were correct, Tori cuts all ties with Riley – declaring that their relationship is over. But does this pave the way for her to reunite with Nate?